<header>
  <nav class="navbar navbar-expand-lg navbar-light bg-light">
    <a class="navbar-brand" href="#">Swoft</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="navbarTogglerDemo02">
      <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
        <li class="nav-item active">
          <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="/demo2/view">No layout</a>
        </li>
        <li class="nav-item">
          <a class="nav-link disabled" href="#">Disabled</a>
        </li>
      </ul>
      <span class="navbar-text">
        This is header
      </span>
<!--      <form class="form-inline my-2 my-lg-0">-->
<!--        <input class="form-control mr-sm-2" type="search" placeholder="Search">-->
<!--        <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>-->
<!--      </form>-->
    </div>
  </nav>
</header>